Answer:
a push
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Explanation:
Answer:
a covalent would be the two that are nonmetals
Answer:
B
Explanation:
The carriage has potential energy
In living things, the source of the carbon-14 that is used in radiocarbon dating is carbon dioxide in the atmosphere.
Living things inhale oxygen, and exhale carbon dioxide into the atmosphere, which is why the air and atmosphere are so full of it.